Page Comparison

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	Column	Type	required	unique	Description
1	EventID	UUID	y	y	unique event identifier
2	EventDate	timestamp	y	n	date when the event appeared in the event log
3	Origin	varchar	y	n	Origin of the event: data-import, batch-update, user, etc.
4	Action	varchar	y	n	what action was performed
5	ActionDate	timestamp	y	n	when action was performed
6	EntityID	UUID	y	n	entity identifier
7	UserId	UUID	y	n	user who did the action, fixed UUID for anonymized user
8	Snapshot	jsonb	y	n	body of the entity

WBS

Expand

	Story	Task	Entity	Description	Module
1	Persisting events
2	Persisting events	Extend domain event with source FOLIO	Instance (FOLIO)	[TBC]	mod-invenotry-storage
3	Persisting events	Extend domain event with source FOLIO	Item	[TBC]	mod-invenotry-storage
4	Persisting events	Extend domain event with source FOLIO	Holding	[TBC]	mod-invenotry-storage
5	Persisting events	Extend domain event with source MARC	Instance (MARC)	Add origin header to align depending DI profile	mod-source-record-storage
6	Persisting events	Extend domain event for Authority	Authority	Add origin header to align depending DI profile	mod-source-record-storage
7	Persisting events	Consume domain event	Instance(FOLIO)	Create table with partitioning by UUID Create kafka consumer for domain event Persist entity snapshot	mod-audit
8	Persisting events	Consume domain event	Instance(MARC)	Create table with partitioning by UUID Create kafka consumer for domain event Persist entity snapshot	mod-audit
9	Persisting events	Consume domain event	Holding	Create table with partitioning by UUID Create kafka consumer for domain event Persist entity snapshot	mod-audit
10	Persisting events	Consume domain event	Item	Create table with partitioning by UUID Create kafka consumer for domain event Persist entity snapshot	mod-audit
11	Persisting events	Consume domain event	Authority	Create table with partitioning by UUID Create kafka consumer for domain event Persist entity snapshot	mod-audit
12	Persisting events	Configuration	All	Provide configuration parameter to enable/disable audit log on tenant level	mod-audit
13	Persisting events	Configuration	All	Anonimize events	mod-audit
14	Display History	Rest Endpoint for history	Instance(FOLIO)	Query list of snapshots from database Calculate diff messages Return list of diff records	mod-audit
15	Display History	Rest Endpoint for history	Instance(MARC)	Query list of snapshots from database Calculate diff messages Return list of diff records	mod-audit
16	Display History	Rest Endpoint for history	Holding	Query list of snapshots from database Calculate diff messages Return list of diff records	mod-audit
17	Display History	Rest Endpoint for history	Item	Query list of snapshots from database Calculate diff messages Return list of diff records	mod-audit
18	Display History	Rest Endpoint for history	Authority	Query list of snapshots from database Calculate diff messages Return list of diff records	mod-audit
19	Display History	Show history Pane in inventory			ui-inventory

Risks and concerns

	Risk	Description	Probability	Impact	Mitigation
1	Long period for audit records retention	The number of records could overwhelm the capability of the Postgres database both from a computational point of view and cost	High	High	Introduce separate storage for audit-events
2	Cascade Updates will create redundant copies in the audit log	The update to holdings causes updates to all related items. Some holdings may contain ~15000 records	High	Medium	Collapse or filter out events that only change parent entity
3	Some flows could update inventory entities without using the Domain-events mechanism	With different capabilities of the system including UI, data import, bulk edit, etc some of the flows might skip sending Domain events and/or edit entities directly	Low	Medium	List those cases and add domain events to flows that has no this capability
4	Linked data	The flow and integration with inventory are not clear for the BIBFRAME format	Low	Low	Adjust BIBFRAME flow to follow the proposed solution for other inventory entities

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Versions Compared

Old Version 16

New Version 17

Key

WBS

Risks and concerns